Dawn M. Foster discusses lessons that can be learned from science fiction about building communities. Some key lessons include making sure the community is more than just the leaders by encouraging everyone to participate, understanding the community before trying to participate, contributing in a noticeable way, sharing useful skills with others, having guidelines that can change and evolve over time, showing empathy to others, disagreeing with ideas and not people, having a reputation that comes from good contributions, gradually growing the community while maintaining culture, being patient and allowing others to participate, maintaining a balance of control, and encouraging diversity.